Moscow Region has been hit by a powerful storm that brought heavy torrential rains and hail. The capital has not seen such a storm in almost 100 years, according to meteorologists.

“In less than 12 hours the city expects 15-20 mm of rainfall, which is almost a third of the monthly norm. The daily maximum precipitation for June 30 is 22.3 mm, it was marked in 1923,” Moscow weather services told TASS, adding that the capital hasn’t seen a storm like this in 94 years.

Muscovites were awed by apocalyptically overcast skies just before the storm.

“This post is for those who forgot their umbrellas at home,” one person wrote.

The winds could reach 24mps, according to the Moscow emergency services, which advised people to stay at home.

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A post shared by Никита (@nikchuh) on Jun 30, 2017 at 3:33am PDT

Blitzortung.org website, which provides lightning and thunderstorm information in real time, released a map of the Moscow storm online.

Some parts of the city were battered with quite sizeable hail.

Muscovites did not lose their sense of humor in the storm. “It’s nice when ice for cocktails is falling from the sky,” one person wrote.

One of the hashtags launched was #ливеньвека (#downpourofcentury).

“And this is called ‘Summer!’” another person wrote with some bitterness.

At least eight passenger planes which were due to arrive in Sheremetyevo and Vnukovo airports, had to land in Domodedovo airport which was the least affected by the storm, an official from State ATM Corporation, an air navigation service, told RIA Novosti. Two more planes had to divert to St. Petersburg and Kazan, the official added.

Around 4,400 people were left without power in Moscow and Moscow Region on Friday, the Energy Ministry said in a statement.